The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 1987
Filed:
Sep. 30, 1985
Mikio Ogusu, Hamamatsu, JP;
Kazuo Urata, Hamakita, JP;
Takuya Tamaru, Hamakita, JP;
Yasuhiko Kamoshita, Hamamatsu, JP;
Nippon Gakki Seizo Kabushiki Kaisha, Hamamatsu, JP;
Abstract
A shutter plate control device in a disc playback device energizes a shutter plate in a disc magazine case with opening and closing members provided in a main body of the disc playback device. The opening member engages with a shutter lever provided on the shutter plate in loading of the disc magazine case to move the shutter plate in a direction for opening an aperture formed in the disc magazine case for exposing the disc to a pickup head to enable the pickup head to read date recorded on the disc. The closing member engages with the shutter lever in loading of the disc magazine case to be displaced by the shutter lever and thereby permit the shutter lever to pass by without moving the shutter plate while it engages with the shutter lever in ejecting of the disc magazine case to move the shutter plate in a direction for closing the aperture.